When your chemistry professor tries to explain London dispersion forces but you're too busy thinking about your vacation plans. Big Ben over here radiating temporary dipoles in all directions like it's trying to attract every non-polar molecule in the Thames.
For the uninitiated: these weak attractions happen when electrons in neighboring molecules momentarily cluster on one side, creating temporary positive and negative poles that pull on each other. Kind of like how tourists are temporarily attracted to Big Ben before dispersing to overpriced gift shops.
The student's confession of "idk I didn't study" is the most honest thing I've seen since a colleague claimed their research would be "groundbreaking."